RE: Second plane
If you are able to build from plans you might want to concider the "Bingo". It's not too hard to build and a great flyer. It is easy enough to fly that I taught a buddy to fly mine (he was having trouble with his trained and thought the Bingo was easier to fly than the trainer.
The Bingo is very much like the Sig 4* but enouhg different that you will most likely be the only one at the field with one! I power mine with an OS .91 Surpass.
Another plane would be the 4-40 or 4-60, these planes share the same wing platform but is a shoulder wing design, the 4-60 was designed for a 4 stroke 60. All the above planes were designed by Doc. Mathews. I have never build one of his designs that I have not liked, all great flyers.