Ok you got one of the Evergreen ARFs.

The ST .61 will be more than fine for that plane. It should balance out great with that engine.

If you find it wanting ( which I doubt ) you could change the .61 out for the .75 at a later date as the mounting, etc is exactly the same.

Some note:

The tail is sort of wide and not well supported internally ( look at the cross braces ). It may break in hard manouvers or at worst flex.

You should install CF struts or take other measures to make the elevator more sturdy.

I used Dubro exit slots on mine, which make the back look much better and act to hold the rods well.

BTW: There are holes on either side for a PULL-PULL rudder. Uses this instead of the provided rod.

You may have found an unexplained triangular stock block of wood amoung the parts.

I found that this fits just above the wing hold down blind nuts and when epoxied in acts to re-inforce this area.

If you received 2 CA hinges for each elevator half, use three instead.

Forgo the provided tail gear, purchase a half dozen .60 sized tail wheels ( as parts ) from Tower for $1.98 ( including aluminum wheel! ) I believe they are provided as parts for the Skybolt.

Make sure that you glue the two wing halfs FIRMLY together. A bit of glassing may be a good thing...

I've got tip guards on mine as well.

Are your wheel pants made of plastic of fiberglass?

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BTW: The CMP Giles 202 is MUCH better! Particularly the Version 2 kits. ( Someone was listening to us! ).

CF gear and rods, aluminum bell cranks for the rudder, pin hinges which are pre slotted and drilled, well supported elevator, great finish, etc...