G'Day Sigcadetmii,
I built one with a TT-54 4 stroke and on board glo.
even with the 4400 m.a. glo nicad fitted to the side of the engine mount box (with the receiver battery on the other side), it still needed a hefty lead sinker under the engine mount.
As the nose gear is not far ahead of the mains, I found it needed only a little travel to avoid very sensitive ground handling.
Although the manual says they flew both test models with a TT- 54, I found it was 'just enough' power.
Sorry I forget the web site, but if you search you'll find a site with a description and pictures of the full building process.
It took quite a while to build and it was fidgety to get all the plastic skinned control surfaces (and flap surfaces) to fit neatly but well worth the effort. The included cockpit kit is excellent.
They look very nice in flight and handle well.
Good luck with yours,