as far as industry standard equipment when it comes to midi, well i'm not real up to date with that (except that mpc's have been a standard for a min and they can be your midi controller). in my opinion m-audio really seems to be the standard. i see it every where, its easy to use, user friendly, and they are the first company that i have seen to put out the wireless midi keyboard
http://www.sweetwater.com/store/detail/MidAir25/
honesty i cant really see paying 3000-4000, are we talking u.s. or aus dollars

, (put up a link for that i wouldnt mind seeing which one you are talking about)for a midi keyboard. i wouldnt, but that is just me. i would rather spent a few hundred on a controller like this
http://www.sweetwater.com/store/detail/Axiom61/
and then use the rest of that money that i would have spend on the midi controller on rack modules, snyth keyboards and workstation keyboards. really you only need one midi controller.
if you spend a few grand on a nice workstation keyboard, like say the fantom for instance, you could make that your master and control up to 3 other modules, keyboards, synths with that. taking out the need for a midi controller keyboard.
i'm not big on cd-j's so i'm not much help there(even though they are starting to take over). i like numark and techniques when it comes to turntables. numark has been coming out with some nice cdj's the past few years, like the hdx
http://www.sweetwater.com/store/detail/HDX/ i like it mainly because it keeps that turntable feel to to it.. but when it comes to cdj's you would probably know more about them than i would. honestly i dont think there is an industry standard when it comes to dj mixers. everyone i see or talk to uses something different.that DJM-800 looks pretty fucking sweet! i kind of think the notebook dj thing is a better way to go. with programs like serato.
i have a version of ableton on my computer that came with pro tools but i have never used it. i'm a big pro tools guy, i'm trying to get my certification in pro tools soon and just upgraded to 7.3. i love it. its a great DAW not just for recording but for editing and mixing. I hear nothing but great things about Logic. i'm pretty sure i remember reading something about how you got a Mac so that might be the thing for you. I do hear it takes some know how to use it. I also hear good things about MOTU. pro tools has been the standard for years and continues to be. the only thing i could really see knocking them out the park is nuendo but thats more of post production DAW and really fucking expensive.
if you do decide to start recording live musicians like guitar player get some mics. dynamics and condensor. tube and ribbons if you got the money.
i think guitar players, doesnt matter if it is a bass player or 6 string guitar player, sound better if you ste up a mic in front of their amp and record that instead of doing it through a direct input. you can do some clever positioning or micing techniques that can give you a different sound. i've gotten an even better sound by micing the amp and doing a d.i. and tracking those at the same time. just layer the two tracks at the same time. you get a really nice full sound out of it.
when it comes to nearfield monitors stay away from m-audios. they dont have that great of bass response. i have krk's rokit5 and i love those. they werent too expensive and they sound great. best thing to do when it comes to nearfield's is just go to a local music shop if you got one around your way and test them out. yamaha ns-10's are found in a lot of studios. they sound good. they arent the best out there but for some reason they have become a standard.
when it comes to drum machines, get one ebay and start searching for some vintage stuff. those vintages drum machines come back in style all the time. there really arent that many drum machines being made anymore it seems like other than the ones that were ment to be hooked up to electric drum sets (which is midi also). i mean you got your mpc's dominating the market and roland has its mc-808 and 909. those are more samplers though but can me used as midi controllers
alesis makes a cool drum module
http://www.sweetwater.com/store/detail/DM5/
it's not bad i was playing with some of the patches in there a few weeks ago.
pro tools has a program they just came out with that i'm thinking about buying called strike. its a really cool drum program
http://www.sweetwater.com/store/detail/Strike/
you could make a decent midi setup for under 2000(u.s.) if you got a good DAW and some nice plug-ins, but it sounds like you really want to go all out and have a nice setup.
i hope i helped some what

i dont think i really answered any question that well
