Graphic Configuration sales Application

This is a very long shot........
I am not sure this project could just be too overwhelming and there are some applications as SAAS that I can use.

Alfresko Ltd is a supplier and installer of Aluminium / glass / louvre canopy or pergola and rooms. You can see what we do at www.alfresko.co.uk

In order to attract more sales leads we wish to develop a 'graphic configurator' that we advertise on Social media. Clients will be directed to a web landing page or a phone app where the application will reside. Clients can then select various criteria e.g. style of canopy, colour, size, roof material, walls material, lighting etc and see a graphic representation on screen. Moreover the configurator will calculate a price of the canopy from a database and maybe produce a quote if possible. I can populate a back office with costs. e.g. cost per glass pane or cost per light or cost per m2 of material and cost of installation. You can see a similar example here https://konfigurator.ba/demo/pergole/

As I mentioned we have a choice to look at a SAAS option but would prefer to design our own as many are flawed. E.g. they allow pergolas to be any length between posts when in fact the maximum length is 4m to retain structural integrity. Projection should not be more that 4m. So we need to build in limits. (not many).

Alternatively I am happy if you want to use an existing CPQ platform as a starting point

I am sure this will generate many questions to anyone who thinks is can be done.

I have no idea what is involved in this so please see my budget as a guess