I have a major problem regarding Solomon and Bonds

Main problem is: I don't really have Servants with high Bonds.

I had no idea that the bond levels would become that relevant for the main story or rather the strength of the Servants.
Until now I didn't have that "one and only team composition that I use forever and ever", exaggerated.
I used each and every Servant I really liked at the moment, which are practically nearly every SR/SSR Servants.
Also, I'm someone who wants to raise them all (or at least I try) resulting in a rather half assed team (but that's a wholly other problem).
I think the saying "Jack of all trades - Master of none" nails it pretty much.

But to come to the point: The only Servant on MAX Bond Level is my very first Grand Order Waifu Kiyohime (Berserker). And I have a feeling, she won't be of much help in Solomon.
Coming next is my very first SSR Jack the Ripper on Level 9 (and no, I definitely won't make it to Level 10 until Solomon. That would be life consuming).
After that follows three or four on level 7 and after that... about 20 or so on level 6.

Now, will I still be alright if I rely on friend support (I don't mean beating the demon pillars at all. I'm asking about fast killing)?
Or is my Kiyohime still useful anyhow? (I think problem is - besides her being 3* - that she's an AoE)

I'm terribly sorry for the long post - I wanted to state my problem as clear as possible.
And also Thanks in advance!