OK so i went and checked out your plane! sorry those motors are waaay off and definitely NOT for your plane.
looks like you've got a park flyer there so you'll need brushless 400 type motors and much smaller speed controllers
so the cost "should" be much less
hobbycity has some great deals on those kinds around $20 just match the ratings on what is suggested for you plane
looks like you're uses a 10x8 prop you're likely going to want to use an outrunner type motor for that (it's not a must though)
the speed controllers for a motor like that can run you anywhere from $20 to $70 (you don't need the $70 one hehe)
lipos might be around id say 2200mAh that should get you good run times to ($20-40 hobbycity)

but please please check out the official super cub thread here on RCU

http://www.rcuniverse.com/forum/m_4371835/tm.htm

read read read they can be loads of help to you for sure!
I know its a lot but start from the first post in the forum its the only way you can learn man!