Need Advice!!

Ill give you breakdown of my test scores. The test scores are in chronological order.

GMATPrep1: 640 (Q44 V34) (First time taking the GMAT)

800Score 1, 2,3=700+ (after reading this forum, i realize these test are bs)

Veritas1: 620 (Q42 V33)
Veritas2: 610 (Q46 V27)
Veritas3: 580 (Q33 V35)
(Veritas has HORRIBLE TESTS! There are blatant errors and the test froze on me twice)

MGMAT (free one): 670 (Q45 V36)
MGMAT1: 630 (Q39 V36)
MGMAT2: 660 (Q43 V37)
MGMAT3: 700 (Q49 V36)

I'm taking the test on June 5th.

What I get incorrect
Quant
1. Combinatrics/Permutations
2. Percentiles
3. Data Sufficiency: Specific to two variable equations and whether they are greater/less than 0
4. Data Sufficiency: Divisibility

Verbal:
Its odd for me, it is almost spread universally in SC RC and CR.

So till June 5th, what should i do?

1. Should I try and take 3-4 practice tests a week and review my errors
2. Should I take 1-2, review the tests, and review OG?

Thanks

Also, how are the MGMATs compared to the real thing? Verbal harder easier? Quant must be harder in MGMAT...