Please Help Me Do Gauntlet As Cheap As Possible!!

Egor_135

Hey guys,
I know there are lots of youtubers' guide out for gauntlet but due to my inherent slow grasping I am unable to come up with a team to beat the gauntlet.( as cheap as possible )

I have 30 4 Hour Crystals and 1500 Units, No other resources stashed. I am planning on farming some health pots from ROL.

Obviously I am TB and below are my Max 5*s and Rank 2 6*s :






I've completed AOL first run previous year in December (cost was 3.5K units without any stash).
ACT 6&7 completed (Exploration on-going).

Any help/tips are really appreciated.

Thanks
Igor