Probably want to.go down HWE route, nothing wrong with LM ( not dry) but as a grounding in the business probably best place to start..
Why not look at leasing equipment to ease cash flow, you can keep some cash back then for working capital, as mentioned you will need this for 3 -6 months.
You really need a van or at the very least an estate , good luck its a tough time to start and I would recommend starting part-time if you're able, so you can get some training before taking the plunge full time..