there is no point rushing your MCAT in april, you dont gain anything. You can still complete and submit your AACOMAS by June and be in line for verification while waiting for your scores. Taking in april will accomplish nothing.
It took AACOMAS about 4 weeks to verifiy THE FIRST people who submitted their apps. So, say you take the MCAT in may, you submit your AACOAMS in first week of june, your verification and MCAT scores will be happening at around the same time.
The bottom line is you are still completing your app by June and are still really really really early. I took May 27th MCAT, submitted AACOMAS June 11th, got scores back June 26th, verified by July 16th, and had 4 DO interview invites by August (out of 5 complete DO applications). Don't rush if you dont have to.