Contacts and advice please

Hi, I am looking at buying a place in Bulgaria, ideally in countryside close to Plovdiv. Currently I live in Greece and would spend part of the year in Bulgaria. I am from the UK originally, my wife is Russian.
For now I was thinking of setting up a company to take advantage of the competitive tax, and putting my car on Bulgarian plates (as it would be a nightmare to do that in Greece).
I wondered if anyone knew the following;
- A trustworthy English speaking company to help me open a company, get an ID card, put bulgarian number plates on
- A trustworthy diligent lawyer for checking when i find a house, in Plovdiv area ideally
- A trustworthy estate agent in Plovdiv area
- Do I have to live in Bulgaria to get Bulgarian ID, can i just pay some cheap rent somewhere and only be there on and off, how would they know?
- As I understand it, if I set up a company I am taxed 10% of my profit in Bulgaria and then a further 5% for what I pay myself, making that 15% of my income after expenses? Is this true?
- Can anyone recommend an English speaking accountant in the area also.
- How are internet connections in villages around Plovdiv.
- Can anyone recommend a reliable, trustworthy builder for renovation, when I do eventually buy.
- Has anyone used the company  bulgarianplates.com, are they any good?
- Anything to watch out for?
Eventually I plan to come but for now I am looking for a quick solution to put European plates on my car with Brexit looming, and to have a european tax base. I am self employed with two UK registered companies.
If any anyone has a house to sell I will be looking for something with ideally over 4000m2 of land, close to a village, I dont mind renovation projects as I plan to make the place capable for off grid living.. Must have decent internet in the area though and of course electricity/water etc.
Sorry for so many questions but I am very grateful for any advice for these points.
Many thanks. Alex.