Full Cpanel Migration : Using Transfer into WHM (target server has NGINX as reverse proxy)

Got a new server configured with Apache having NGINX (using Engintron) as a reverse proxy in front. Also have the Google Page Speed Module script (Apache version) installed & working properly. Already another Wordpress website is working well on this new server & has its own dedicated IP. Have to do a full cpanel migration from another VPS to this server of Joomla website(s) -- a primary joomla active site along with a separate cpanel of its old version that we are retaining for reference. Tasks: 1. Configure the site you will migrate to work with the current setup on target server (NGINX in front of Apache). 2. Ensure the site you migrate has AutoSSL / FreeSSL generated from new WHM as old free SSLs from origin server wont come along. 3. Configure the backups for both the wordpress site and the joomla site you will migrate using the incremental backp method (we have got a 100 GB dedicaed space for backup with this hosting provider). To check if you have properly read the brief or not, I will respond only to those bidders who answer this question: a) Should I take up one more dedicated IP address so that the wordpress site and joomla site can each have their own dedicated IPs or the NGINX as reverse proxy wont allow separate dedicated IPs for the two websites ? b) Google Page Speed Module script : will the same script as is working for the wordpress site be enough or you will want to install a separate instance of that for the Joomla Site. Work is for immediate hire. Yet if you answer (a) and (b) only then I will respond to save your and my time.