Seeking: Shield simulator advice

Wonko33

I am trying to get the 2400 progression reward -
I have a decent roster with many 166 (BP-Lcap-Ldaken-IM40-cmags-hood-hulk-punisher-Lthor - patch) - and many fully covered 3* in the 130 level range
and - well covered level 200 xforce and shethor

1- I don't care if I can keep the score after, I just want the rewards , so early push not a problem
2- I want to minimize HP shield cost of course
3- I am not sitting at 1300 and I am 300th in my pool

Q1- at which level (points) should I always be shielded when not playing? is it quieter if I push this week instead?
Q2- When I reach ~1800-2400+, how many matches can I usually get in before having to shield again?
Q3- how many points per match can I expect when I hit 2000?
Q3- what time of day is lower retals when not shielded?
Q4- Any strategies ?

PS- note to D3- when the event last for a damn month, can't the shields be like 1day-3-days-1week? you cut down the time for LR why not increase for this?