calling all math/statistics nerds, please help: how do I maximize payout of these 2 parlays?

I have these 2 parlays, both with only 1 open slot, all other plays already winners.

so, this begs the question, how do I maximize the payout?

options, as I see them, are:

1- don't hedge and risk it all, on 2 plays that are close to -110. this would maximize the payout (except of course for taking 2 dogs, but that would be just dumb)

2-hedge by just taking opposite -110 plays, and guarantee myself roughly $5500 minimum

3- take a line, like evansville -10 and buy it down 3 points to -7 in 1 parlay and buy up drake in the other parlay from +10 to +13 and hope for a middle.  this gives me the chance to hit both, but will lower payouts to roughly $4500 on each.

4-fill one parlay with a large favorite ml, like a -10 with a ML -500, which would lower the payout on that one to around $3400, and then buy up the +10 dog in the other parlay to +13 and hope to hit that middle.

any other ideas?

and if you were in my shoes, what would you do?

I have not decided, if I want to risk it all or play it safe.  To me, the $500 risked is not a big deal, and winning $10-12k does not affect my lifestyle positively or negatively, so I am not basing any decisions on that.  I simply want to do what is mathematically the ideal play.

Thanks covers brothers  

but what if I don't hit the middle?  then i will get either a 3400 or 4500 payout, which would be less than option 2 and potentially less than option 4...... correct?

i filled them with Michigan State ML -230

and

Michigan +8 (bought the 3 points)

payouts are below:

thanks for the advice 

let's pray for a middle 

Like he said before, option 3 is probably the best mathematically because you still guarantee a winning parlay without reducing the payout too much as in Option 4 while having a decent sized window to middle. 

Regardless of what you choose, good luck!!

thank you 

You guys both came up with pretty much what I did....which is good

I went ahead and filled it as it shows above...probably posted it as you were typing your reply...sort of a hybrid of 3 and 4, as I took a ML but not a huge juiced one and instead of a '6-pt-middle', I have a '7-pt-middle'