As Pok said, a HUD (be it GT+ (which is free) or PAHUD (commercial release)) will work with your PT stats to overlay them on the tables, like so:
This is Victor Chandler with me using GT+.
You can do a search, we have had at least one very in depth thread on this, but I'll say a couple things here.
First, you need to be comfortable multi-tabling, I usually bring up 4 tables (2 monitors) to get warmed up (usually takes a round or so), then I add more tables up till 8. I could probably do 12 or 16 if I had the real estate to do so. But you usually don't start with your max tables, you work into it. If you are trying to learn to mutli-table, open up 2 for now, get the HUD's working (must use huds), and add a third, then a fourth. And if you feel overwhelmed, just close one. IT takes time and practice to get beyond 3 tables.
Money wise, I have found that it decreases your Standard Deviation, and therefore decreases your BR requirements. In a semi-recent thread, I showed that 8 tabling, my BR reqs are lower than what is required to actually sit at 8 tables. BUt yes, your play will suffer a little, so your bb/100 drops, but your $/hr goes up with each additional table. The key is to find where your $/hr is maximized.