Another Newtone user here, I have them fitted on all my short scale basses. I tend to go for the Platinum nickels with a round core, but you could always talk to them as the customer service is excellent.
My short scale basses have a reasonably tight feel but it's not massive over a 34" scale. A different choice of strings can change the feel, have a chat with Newtone strings see if they can do something for you or if you get the Mustang and its around 30" scale I could lend you a set to try the difference.
I have also used the Velcro cable tie on my cables, the type with a slot for the cable to pass through. Push the tie to the bass end of the and then thread the tie through the ladder of your guitar strap. Holds just as well and offers the cable some float.
Fusion have got the Funksion' gig bags at £19.18 plus postage until Cyber Monday. Only 18 left.
https://www.fusion-bags.com/collections/black-friday-cyber-monday-sale
I have the same problem tauzero.
The brain is very good at psychologically blocking out tinnitus but the moment you think about it it re-appears.
Unfortunately I also have rhinitis which causes block sinuses and extenuates the tinnitus when it kicks in. The morning is the worst as I have to get my ears to pop before it clears.