IDP Dynasty Keeper Help / Advice

[Dr3adPirat3Rob3rts13]

Hi Everyone - looking for some advice / help on what player(s) I should keep for my IDP dynasty keeper league. Our league is setup as follows (i.e. roster, scoring)

QB - 2
WR - 1
RB - 2
W/T - 2
W/R - 1
K - 1
IDP (any position) - 2
DL - 2
DB - 2
LB - 2
BN - 8

Offensive scoring is Standard Yahoo.
IDP scoring: Solo Tackle = 2 pts, Assist. Tackle = 1 and Sack = 3

Keeper Rules: Each team gets 4 keepers and can hold each keeper up to 3 years. IF keeper was drafted then the keeper takes that draft pick (i.e. CMC drafted first round in 2019, kept in 2020 he would be the first round selection). IF the player was not drafted they are the 8th round draft pick.

Players I am considering for keepers:

1. Davante Adams (WR) = 2nd Round
2. Mark Ingram (RB) = 15th Round
3. Jaylon Smith (LB) = 10th Round

Struggling with the last keeper between:

Roquan Smith (LB) = 7th Round
Tremaine Edmunds (LB) = 8th Round
Kwon Alexander (LB) = 9th Round
Devin White (LB) = 14th Round

I am going back and forth between Roquan, Tremaine and Devin. I think they all have a lot of potential but am trying to decide if it is worth giving up the 7th, 8th or 9th when I could have a young promising starter in the 14th and take a chance on the 7th-9th rounds.

Would love people's thoughts and advice on my current keeper considerations and if struggle to find the 4th.

Thanks.