sounds like the way to go as far as I am aware the micro is the same as the other spektrum 2.4 rx but just check that there may be a speed issue, I changed from the sr3000 to the pro sr3001 and they claim that the 3001 is twice as fast and you do notice it a bit on the track, I race onroad nitro and speed is a priority, I say go for it get the micro you shouldnt notice any diffence if there is any when it comes to performance and its better to have some space in your receiver box go to www.spektrumrc.com to get the info
good luck