Welcome, Norm.
It appears that your 1st lot of Q's have been answered.
1. Done. Depends what you get used to.
2. The Telrad mounts either by self adhesive patches &/or screws. Both can be used/left on the t'scope.
3. The R&P, if necessary, can be modified/fixed if too sloppy. The 'Crayford' style focuser is smoother than the R&P.
4. See Ken's reply.
5. Multiple choice here. Focuser & goto t'scopes both included.
HTH.
L.
ps. Next Q.