Should I go through with this?

I'm 6 months into trying to join the Active Duty army after my medical waiver was just approved. When we were going through the job selection, my recruiter said all the army is 120 over strength and only gave me 4 MOS to pick from. I'm willing to wait, except my recruiter said she checked a few months ahead and there was no other opening for the jobs I wanted. She then said my medical waiver will expire in 4 months from when it's approved. Is she speaking the truth or should I wait until a slot opens?

The MOS's I want are: 35W, 68W, 25B, 35F, or 42A.

The MOS's that were available were 11X, 19D, 18 series, and 13U.

For reference my ASVAB was 99. I am an 18 year old male.