Choosing Between Natrelle Inspira 280 SRLP and 345 SRM

I am a 38 year old mom of four (all ages 7 and under). I live a super active and physical lifestyle, between my family and the gym. I lift 5-7 days per week, do Baptiste yoga (a very challenging hot practice), run, and do spin. I need my breasts to be able to move with me.
My BWD in both breasts is greater than 13, and after many talks with my PS I had settled in on 280 smooth round low plus profile, but he said given his choice he would put me in the 345 smooth round moderate profile. He said I could pull of both implants well, and I'd be happy with the result either way. Both implants have a width of 12.5. His reasoning for moving to the 345 SRM is that it has a slightly higher projection (280 SRLP is 3.3, 345 SRM is 4.2) which he said will help fill out some of my current laxity/sag better.
I am, of course, now obsessing over the two. When looking at 345 SRM profiles on the forums I feel like the overall look is just too big for my taste. When I initially started toying with this, I was looking at low profiles in the 190-220 range. Up until a week ago we were choosing between a 250 SRLP and a 265 SRLP, which each have a smaller width, so I definitely wish I had discussed the moderate profile in a smaller width and cc with him (like a 310 SRM) as I feel like that may have been a happy medium. But...again...obsessing over details. My kids are on vacation with their dad, so I have nothing but time on my hands to sit and read forums and look at photos and make myself nuts.
There aren't a lot of low plus profile reviews, which has made this harder too.
I am small, but muscular so I appear broader than I measure (I think anyway). Stats for anyone this may help.
5'3"
123
BWD >13 in both sides
currently wear a 32C (that I don't fill consistently)
15% body fat, my ribcage measures 29"

I played with rice sizers, 1g = 1 cc and realized that 345 was just not a size I was personally comfortable with, so 280 it is! These pictures are of one of my lululemon workout tops with and without the 280 sizers in for comparison.

I swear I’m not sticking out my chest, I have a significant back sway/curve ????

My surgery appointment was 9 a.m., I was out and awake by 10:30 and on my way home by 11. On a scale of one to ten, I was a 3/4 leaving today in terms of soreness. I’m taking 800 mg of ibuprofen every four hours, trying to avoid the oxy they sent me with, I just have no interest in all the other side effects those come with. They put a patch behind my ear too, to help with nausea.

I stole a peak about three hours post-op, and I’m in love. I didn’t know you could be in love with boobs. But I am. They are perfect.

I ended up going with Natrelle Inspira 280 smooth round low plus profile. They look like the boobs I had in my 20’s. I kind of want to just take off my bra and stare at them.

I’m completely numb, sore. Crazy sore, like I just did a 12 count for ten rounds of burpees every minute on the minute. Bearable, but not comfortable by any means. It’s in the 90’s here all week, so my PS said no walking in the neighborhood. Just mailbox and back. I’m going stir crazy.

I can’t even explain how much more confident I feel already. I work so hard on my body and it was the one thing that always made me sad. Looking down and seeing my stomach first. I could never train hard enough or get my stomach flat enough. I feel like a woman again.

Anyone on the fence or scared, don’t be. So so worth it.

These pics are literally 2 hours post-op. I was scared to move the gauze or my bra too much, and I left the strap in place too. So not the greatest shots, but you get the point! The bloat from the IV is real already, saline kills me. But other than that feeling great. I can’t wait until I can really touch them. It kind of all still feels like it didn’t happen right now.