GRE prep after GMAT

Hi guys,

I'm sorry if this has ever come up before, but I'm about to take the GMAT in mid-September and because I'm also gonna need the GRE for some adjunct programs, I will take the GRE 4-5 weeks later in October. I'm preparing thoroughly for the GMAT, work my way through all the Manhattan books and think I'll do alright (aiming for 700+), so now I'm contemplating on which additional books I need toi buy afterwards for the GRE study session.

I have read that the GMAT quant is supposedly harder and that a GRE test-taker doesn't need much more background, even though the geometry seems to be harder for the GRE? So, after being a happy customer of the Manhattan collection, I won't buy the whole 8 book series again for the GRE, but maybe specific topics of quant, and definitely the verbal part. I'd love to aim for high scores on the GRE too, but don't want to waste my time or money on a whole new collection, which I hardly will be able to finish in the 4-5 weeks anyways.

So I'd appreciate any thoughts on the matter and if y'all need any more info to give me educated advice, feel free to hit me up. Thanks in advance y'all and take care.

Best,