Before you do anything about kit what i would do personally is canvass like a loon for maybe 2/3 weeks.
Just say to people you are expanding or have relocated. Give them all your details and say you will be round to clean at your preferred start date. (dont leave too long though)
Get some quality flyers made up, a work top with details printed on and a map.
The quickest way to build a round will be door knocking!
Although we have found this not to be the best work it fill days easy and as you are starting out you have quite a few to fill

To start with you will have work dotted all over and maybe none next door to each other. Dont worry just keep at it and IT WILL COME!
To build a round could take any amount of time, all depends what you put in to get the customers.
I'd say after year 1 you should be in a nice position, as long as you work at it.
Also go WFP from day 1. Its safer and more efficient. We done 7 years trad and wished we'd done it way way sooner.
Although WFP as you know has the initial higher outlay of the kit, it is way worth it!
If you need to start on a budget ladders are an option but if you can go WFP.
Just keep at it there are plenty of houses and people who want window cleaners, you just gotta find um!
good Luck

Andy