First model.

Glues can be funny. There are many different types of glues available to use, and each has its traits. For firewalls (part that the engine mounts to) I prefer to use a good quality epoxy. If it is a beam mounted engine, I use Gorilla Glue wood glue. Then there is CA. Some like it, some hate it, some cannot use it as the smell does not agree with them and are sensitive to it. I myself, use all three types mentioned. CA is quick, and is good for everything but firewalls, in my opinion. I do like to use wood glue, as it does give you time to work. With that said, I do use wood glue and 'tack' pieces in place with the CA glue. Again, when it comes to the firewall, I use a nice slow curing epoxy.

Now as for plans and building... Again many ways and things to use to build on. Some use hollow core doors, some use drywall, some use ceiling tiles, and some use styrofoam. Myself, I use a 2" thick piece of styrofoam with good results. With that mentioned, my styrofoam is on a good solid office desk. The main thing here is that your building surface is smooth, flat, and free of warps. My plans I 'pin' down with 'T-pins' or tacks. I then pin or tack a piece of wax paper over my plans so when building, the glue does not stick to the plans. And as it is later here now, I will leave you with this. Take your time, read insturctions or study your plans, take your time, and enjoy!