Not a problem
For the record:
Heli radios...or radios that can cope with helis, have a difference from radios that support planes.
This main difference is that the stick that controls collective pitch also controls the power/throttle too...basically two channels on the one axis of the stick...ie as you raise/lower the collective stick the pitch and power go up and down as well. Its possible to use a plane radio and have a 'Y' lead coming out of the throttle channel...usually channel 3...the Y lead connects the throttle and the collective servos...but its hard to set this relationship up...so it works well....in fact its not good because 2 servos are sharing the same common connection...this could bring problems with voltage drop etc.
I would hunt about, 2.4 ghz is the way to go really, the cheaper end are probably the 6 channel ones...but I would say the 7 channel is the better one to get.
The older FF7 radios can be upgraded to 2.4 ghz..but looking at prices the brand new sets are well priced.
Rob