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Currently fly one on 6S, using the flightpower 5500mah packs. These batteries are lighter than many 5000's, and are 50C. I've stretched it to use 605 main blades and 105 tails, and I fly most lower than normal headspeeds (1500/1700/1900). I'm using an 850KV hacker,talon 90, and the smallest synergy pinion. current peaks are WELL ABOVE the 90 rating on the talon but it's been flying well like this for over a year without issue. It does land occassionally with the high temp beep notification, but has never reached the shuttoff point. If i wan't so stupidly obsessive about weight I would put a talon 120 in it. Would be better suited for the job,... but I'm stubborn. I also modified an E7 gear for the tail gearbox, so I'm running 5.45 to one tail ratio, and the 766 tail output shaft (3.6mm longer so provides for a little more tail pitch range). I run a lot of pitch range on the mains (16/16) due to the lower rpms, and wanted more tail than even the 4.9 ratio and 105's provided. It's a beautiful flying machine, with 7 to 9 minute flights normally being the average till capacity telemetry tells me 4500mah has been used. This is flying a mix of different rpms. It's also a ton of fun using 5s/5500 packs (same cells), flying at 1500 the entire flight. This setup goes roughly 10 minutes.
I would highly suggest a much much lower KV motor, as the 1100 is not going to be happy at lower revs. You'll probably see high current spikes and lots of heat. basic math shows 1100, 12 tooth pinion, and 6s should peak in the 2400 range, so unless you put some monster, overkill ESC in it, you'll be overheating the ESC if you try to get the revs down. I like the hacker motors for their high efficiency in lower headspeed setups. The 850 setup shows math of 1900ish peak, and is fine at 1500. The machine flies well at 1400 but the ESC gets way too hot there on 6S, hence my low rpm mode of 1500.
Prod manager at Hobbico