RCKen did a review of this model
http://www.rcuniverse.com/magazine/a...article_id=713
He noted a few things he did differently than described in the manual.
Based on his review I would go with the Saito 1.00 if the budget can handle it. If you need to go with a two stroke I would probably choose the Tower Hobbies .75 since it gets good reviews and is priced right.
The Hangar 9 (60 size) Warbirds do not need high dollar servos. 'Standard' servos (40 to 50 ounces torque at 4.8 volts) are plenty for the control surfaces and throttle. Servos with ball bearings seem to last longer than those without bearings. You'll need 5 of these and they will cost between $9 and $20 each depending on the brand and model you choose. I like the Hitec HS-425BB (about $15 each) but there are dozens of good options.
The 'low profile' retract servo will probably cost around $30.