Soulman - Realize that if you put a 60 on the Ultimate Bipe profile, you'll add a great deal of weight the front end. If you want to hover, you'll want the aircraft to be tail heavy. With the 60, you'll then have to add weight to the tail to offset the weight of the 60. Now the wing loading will be so high between the 60 and the extra tail weight, the aircraft will fly like sh*t!! You want some real power, that is light weight, then look into the Webra 50. Have have 6 of 50s & 4 - 32s, that should tell you something. The Webra 50 runs about $130 US. I much prefer the Webra over the OS, etc. etc. but this is more personal preference than anything else. You want a good light motor with allot of punch for the money, buy the Mecoa - Tom Cat 46 for about $64. It is the old OS46 SF. Its hard to beat at this cost. Or a TT 46 Pro for about $75. It shoulds like you Royal is just too tired because it should hover that aircraft with a 11x4 prop.
Hope that this helps you out!
Kevin