Return is way higher then any team will pay to move those contracts they are only 1 and 2 year deals

Just being a bit picky, but no way do Koneckny and Provorov go from entry level deals to 6mil and 8ml. They're still RFAs and have little leverage coming off their first deals, I would see bridge deals to UFA, so something like 4mil and 6mil for 3-4 years respectively.
Also, the defense (and forwards) are way too young, and the team lack and grit. No Simmonds, no gudas but no return for them either? No Radcliffe? SOme of these arent moves that help the team, I know its a glimpse of the arrival of youth, but...

It would be cheaper in the long run to throw them the 8 year deal at those prices. If you give them a 3 year bridge deal and they continue their growth they are going to command $10/8 instead of $8/6 especially if the cap keeps going up.

thats true, but they might not be worth that in 5-8 years, plus 4 years until they are UFA is a LONG< LONG time in hockey. Doesn;t make sense to overpay for 3-4 seasons and if they dont progress (thinking more of Koneckny here) or another youngster is better, then youre screwed.