First FLR-M: proof of address---Advice please :)

Hey everyone,
Just finishing up getting documents together for my first FLR-M. I'm here on a fiance visa currently and have been here since July. Here is what I have for mail. Any input on what would be best is appreciated. We plan on applying on the 10th/11th of December via post.

July:
18th-Severn Trent statement addressed just to me. We can't find anything addressed to him in July. I have a savings statement dated June 2017 (just him) and a DVLA vehicle tax reminder dated 31st August (just him). Alternatively I have a joint letter from SSE about changing the account to my name, but I thought Severn Trent would be good since it's another source.
I do have a Standard Life retirement plan statement for him dated 31st July but I wasn't sure that would be good enough.

August:
3rd- Council tax bill addressed to both

September:
12th-SSE electricity statement addressed to both

October:
26th-official letter from SSE regarding our cancellation of paperless billing and tariff information-addressed to both. This is the ONLY piece of mail I have in my name joint or individual for October. I don't know if it's good enough. Do I need a piece of mail for every month?

November:
8th-Joint bank statement addressed to both.

December:
8-Will have bank statement then as well

Thanks in advance for advice!

Ok so it was advised to me on my Expat facebook group to send the Severn Trent and the Retirement plan statement for July and I was going to just throw the DVLA letter in there as well. Also it was advised to me to still add a statement saying that I've only been here since July so we don't have as much post  available to us to use since I've only been here 5 months.

if anyone has any additional advice or guidance to offer, I would appreciate it.

As you are switching from a fiance visa they will NOT expect you to have six items of mail yet.  Just send what you can and in the "additional information" section clarify that you only arrived on xxx date and have sent what you have so far.

No need to sweat ANY of this. 

Ah, wonderful! That's just what I needed to hear!
Thanks!