What I said may have sounded wrong I wasn't talking about big wheels and tires, I meant big compressor and turbine wheels. Also my point wasn't that a lifted rig can't tow. I had a 15,000lb fifthwheel and my rig with a lift and tires towed that thing like a beast when it had the stock turbo and injectors. It just didn't look like the whole combo was going to work well for towing. I also assumed you hadn't regeared the axles.
IMO it looks like blackmega has you squared away. Probably be the most inexpensive and tow friendly route while still having some good power potential.
If your needs change down the road I'm sure you could always find someone to buy your turbo while you move up. I know that's what we're all trying to avoid here (doing it twice......or more lol) but sometimes that's just part of the compromise. Unless of course you go with compounds. I'm sure you can go bigger, but I have to imagine that if you don't guess just right with the parts combo that towing could turn into a PITA. And you'll turn that nice white trailer into a gray mess.
Course I'm just an apprentice at this diesel modding. The little (I think) I know has come from reading here and the little bits and pieces gleaned from good old google searches.