Link wheel is the process of linking the websites in circular way for example site A is linking to site B, site B is linking to site C and Site C is linking to Site A.
First of all you have to consider meta tags and website loading speed, compress the images for to increase the website loading speed. Use proper and related url for the web pages.
Conversion rate optimization (CRO) is a discipline that focuses on the testing of landing pages, aiming to find the optimal design and messaging mixture that produces higher conversion rates.
Source - Internet
Older domains are ranked well in Google, If you use any keywords to rank in Google, then you will succeed and you will get a good pagerank and keyword ranking.