1. Even if you don't use lite ply/carbon on wing spar assembly use PowerPro or Spiderwire wrapped and CA'd around spar. Haven't had any spar issues so far. Pretty straight build except for wing assembly. Don't skimp on glue at the fuse wing joint either. A few more grams is worth it compared to having folding wings(in flight). It's not a Navy plane!
2. Go light and get a motor with about 300+watts(at least 25-35amps) on a 11 x 4.7SF prop or above. Or an e prop if you've got an inrunner or a higher KV outrunner.
3. Just cause I like tailwheels, get the World Models lite tailwheel assembly for taxiing better.
Just a couple of suggestions I used on mine successfully. Good luck it's a fun plane!