"I dont have super large hands so I dont think a SYKCO would be a problem, I wear a size large glove."
My statement about the 511 not being ideal for large hands only applies to the 511/311, the 711/911/1311 handles are scaled up version which are a 1/2" longer compared to the 311/511.
"I dont doubt the strength of SYKCO but I am not sure how I feel about the small tangs. I am more for full tangs like the RMD."
The full tang vs. hidden tang will ultimately not make any difference in strength as the blade will likely break at the ricasso area if it was to break.
"My price range is >200 so unfortunately bussee combat blades are out as much as it pains me to say. The SJTAC and Skinny Ash are some of my 'grail' blades though. Maybe one day."
The Scrap Yard War Dog can be had for under $200 on the secondary market, whilst still being INFI. Best value in 5" INFI, bar none.
"How big is the choil section on the 511? From the pictures I have seen it looks extremely small even for med sized hands. Is it usable?"
The choil should be roughly 1/2" long, and you should be able to put at the very least the tip of your index finger in it. You won't have as much flexibility in how you choke up though, as you will likely be limited to only the tip of your finger unless you modified the choil.
"I am a big fan of the 511 and i'm surprised how light it is. The blade weight would help with chopping. Do you know the weight of the 711 offhand? I am trying to get enough bang for the weight."
The 511 won't be much of a chopper even with the forward balance because it is very light. If you wanted a blade that was a competent chopper while still being good at the finer tasks, the 711 would be your best value. It weighs in at roughly 14.6 oz and chops very well for it's weight/length. I don't particularly care for choils, but I don't really hate the choil on the 711 as it's one of the better ones I've experienced. I would likely go straight for the 911 over the 711, as it only weighs a couple oz. more, should be more capable while still being good for the finer tasks and still retails for less than your price limit.
BTW, Here's a link for a compilation of specifications of MOST of the Busse & Kin blades that have been released.......

http://www.bladeforums.com/forums/s...ghts-of-Swamp-Rat-Busse-amp-Scrap-Yard-Knives