1) don't make your sites public on the biggest SEO forum on the planet while bragging about wanting to build links to it. This forum is watched by google employees and these people (doing their job, of course) would love nothing more than to find sites like yours and penalize them
Just click on the "report" button beneath your post and ask a moderator nicely to delete your site from the post before someone sees it
2) the page you wish to build links to looks more like a landing page for PPC campaigns than a page optimized for SEO, I highly recommend that you drive PPC traffic to that page, I'm sure you'll get a good number of leads because the page looks good
3) the niche / industry you're in is very competitive from what I know, you'll probably need lots of links... and strong ones, too in order to rank that site / page. Be prepared to pour at least a few 100s $$$ per month in backlinks, maybe a few $1000 even. Just saying...
Specifically, I'm interested in techniques that have worked well for others in my industry
quality PBNs, quality niche edits, and quality guest posts are what you're after. You can find packages for these in the forum's marketplace, but not everyone provides quality products, so do your own diligence when buying:
https://www.blackhatworld.com/forums/seo-link-building.43/
https://www.blackhatworld.com/forums/seo-packages.206/
If you wish to build the links yourself instead of paying for them, this guide will help you approach link building safely:
https://www.blackhatworld.com/seo/guide-how-many-links-per-day-week-or-month-should-i-build.1502403/
If you don't like / want to build the links yourself, or buy them from the marketplace, you can also try networks like Adsy.com, they tend to have many quality sites in their inventory (among many garbage ones, too, of course. So, again, do your own research and due diligence when approaching any backlink seller, and only buy from those that offer guarantees, samples, have only positive reviews, or that you trust)