Do I trade? PLEASE HELP?!

[thebrock]

So I have pretty good cover in most places but 1 trade let.

Rucks - Jolly, Sandi, Trengove, Lobbe

Happy with Trengove as cover lately but I have this bad feeling with Fraser's name as emergency.

So question is, do I trade Sandi? (can afford Mumford) then if Jolly misses Trengove covers.

Leaves me with no trades for the GF but could need those points to get there.

PLEASE HELP! :)