If you have 17 months, labour taking 4-5 months these days you should be fine.
Regarding the status ..if you went to TPS from F1, you can go back to F1 and during the GC change status from F1 to GC.

I would not panic at least for now because you will have a lot of reasons to panic later :) like when you check everyday to see if perm is approved or audited. Same thing with I140 and the big long wait for 485.

one wise man told me dont worry unless there is a reason to ..right now you don't have a reason to worry because you still have a long way to go.

Regarding the concurrent filing , again since you still have a long way to go I would not worry about it right now. After your perm approval if your pd is current file it concurrently if you wish to ..If you don't file concurrently file the 140 in premium..

Good luck.

same here bro vukampa pidit quota only TPS status lawyer just sent prevailing wage 2 weeks ago. waiting for it, then long process .... aba june 2018 bhanda agadi hune ho ki haina ? tension cha. ur case is few month advance than mine (given recruitment and ad is all done) am in civil engg. small firm in south finger crossed.