I'd make a suggestion but after reading this a couple of times I'm still not clear on what you're trying to do exactly. Plumbing can be tricky if you're not educated so I suggest getting a good understanding of it before you start. Using the wrong fitting in the wrong place can cause alot of grief. Be sure to vent everything. Don't stack things like toilets and washers over sinks on the same drain. I'll be happy to answer specific questions.
Plumbers hate to drill holes and will usualy use a little more pipe to avoid drilling if they can.