Hi, and welcome; just a few things first -
Typing in all caps is considered SHOUTING, and sooner or later someone will ask you to not do that.
There is a topic at the very top of each forum that we ask each member to follow; it includes editing your profile to include a location. It also contains not only some guidelines that will help you get the most response to your questions, but also a few links to quite a bit of info that will help you NOT make several common mistakes. In case you missed it -
http://www.johnlsayers.com/phpBB2/viewtopic.php?t=4062
One of the areas the above link also covers is the types and amounts of information we need to know about your space in order to make useful recommendations - things like all three dimensions, type of construction, any odd-shaped rooms, etc -
So, as soon as you can follow the guidelines in the above link we'll be more likely to have enough info to answer your questions better - just generally though, you want a relatively short reverb time in a control room compared to your live (tracking) room - otherwise you may be fooled by CR reverb and think you don't need as much 'verb for your mix.
Modes, in a space that's already created, are mainly handy to know what/how much treatment it may take to smooth out the room; if you're building from scratch, then it's good to understand modes even more so you don't build a space that's harder to get sounding good.
The more info you provide on your situation, the more we can help... Steve