The most effective way to earn MRP's is to participate in auctions with 2xMRP for 1 bid. At such way you will earn 10 MRP for 1 TCredit.
I think that the best use for the MRP that you earn is to buy Tcredits and to compensate those TCredits that you used in auctions.
Namely, you can buy 1 TCredit with 126 MRP, and also get 102 VP.
If you buy 10 TCredits with 1260 MRP's, you will get 1020 VP's.
Therefore, there is only 480 VP's left for EA status, which you can easy gain through your daily, weekly and monthly tasks.