I know just $.02 more than you do, but here it is.
Depending on how much you want to spend, you might need to do somehting with the floor, i.e. replacing/reinforcing beams. I would think that being on the second floor is going to give you problems with vibration. There are of course options to isolate all your gear.
Second, again considering budget, think about redoing the wiring and putting outlets on direct, individual breakers for cleanest, steadiest power.
I don't know if there are special building materials you should be using, but I suspect so. In connection, room treatments will be key.
My most important advise would be, pay close attention to what everyone else posts.
Good luck; good listening.
Depending on how much you want to spend, you might need to do somehting with the floor, i.e. replacing/reinforcing beams. I would think that being on the second floor is going to give you problems with vibration. There are of course options to isolate all your gear.
Second, again considering budget, think about redoing the wiring and putting outlets on direct, individual breakers for cleanest, steadiest power.
I don't know if there are special building materials you should be using, but I suspect so. In connection, room treatments will be key.
My most important advise would be, pay close attention to what everyone else posts.
Good luck; good listening.