ON SITE SEO WORDPRESS, INTERLINKING PAGES

My site is airconditioning-london.co.uk. I probably have up to 100 pages on the site. A lot of them are now optimised but a number of them are still not and are just messy (sub pages). Need some one affordable to spend time to implement templates on every single page, tidy up the text on the unoptimized pages, make sure meta descriptions are high value, heavy interlinking pages for on site seo and change h1 title tags or meta tags on photos to be more relevant according to the page.

I am not a amateur on this subject and i am actually a designer my self and know all about seo, however i do not have time as i run the business. For me to hire someone i would first need to see their skill on x1 sample page of mine to see if they do a good job. That means template implementation, seo, interlink, header, meta tag, and meta description relevant for optimised serps results in London. Please do not message asking for thousands you will be declined i am on a tight budget this would suit someone willing to put a few hours a day in this and to get it complete as soon as possible. Not drag it out and tell me 1000 hours. I will not accept. So that is the disclaimer. Web site used wpbakery so it is very easy and also yoast. Main service pages have schema. I would need an estimate offer before i even consider delegating the job. I will not go in blind. Thanks.