RG750GL Load balancing, fail over and 1 to 1 NAT - HELP

Hi I’m looking for some help. “I’M NEW WITH MIKROTIK” I have a 2 ISP Ethernet network, one with 50MB and a full class C of public IP and the other ISP is a 30MB with only 5 public IP. I have already make the load balancing with the ISP.

ISP1 = port 1
ISP2 = port 2
LAN = port 3 - running a DHCP server (private IP)

I would like to know how can I use 1 of the public IP from the ISP1 to NAT 1 of the private IP.
Example: ISP1 173.211.XXX.1 and ISP2 24.541.XXX.1 for the load balancing and the local network 192.168.8 1/24 but i wan to use ISP1 173.211.XXX.2 for 192.168.8.5 so that the computer/server that has the IP 192.168.8.5 can be reached by 173.211.XXX.2 and can go out with 173.211.XXX.2

Also i would like to know if it is posible to have a computer connected to LAN port 4 and have a static ip from the ISP1 ex. 173.211.XXX.3 manually configure on its NIC (the computer no the mikrotik)

I don’t know if this could be posible when using the load balancing/failover option or not.

LIke i say i’m new with mikrotik. i’m learning!


THANKS IN ADVANCES!