you'll be fine... at around 7Lbs it will fly nicely over powered with your .61... sure a .46 would fly it fine and have an OK amount of reserve power but your .61 will really wake it up. If you can fit it, I'd think about a little bigger Fuel tank... 8 oz on a .61 considering you won't be... or should I say shouldn't be at full power unless your going straight up will give you a good 10 min flight... a 10 oz tank will give you a bit more reserve fuel for when your having to much fun

If your new to Decathlon's be careful until your use to the planes rudder, stall and watch the snaps... it will tip stall if you get to slow on landing or try and take-off before it's ready. Snap's can be tricky... they almost ALWAY's do a snap and a half unless your on and off the stick's quickly... Decathlon's start kinda slow into a snap then finish FAST...watch multi snap's... if you do two consecutive snaps it will spin up into the second snap VIOLENTLY... since your kinda over powering it don't try full throttle snaps until you see how they are at say 1/2 to 3/4 throttle. The rudder is deceiving... it may not look large but boy is it EFFECTIVE... giving it to much at the wrong time can spell disaster.

John