double check electronic design

Need a electronics expert to double check a DC to DC pcb design, need to calculate correct filtering and track width and conponent tolarance, check Arduino relay components.

2 x 12v battery 100A - 3 stage charger
UPS functionality
constant 5vdc output 500mA
constant 24vdc output 3A
constant 48vdc output 500mA

PSU in 24vdc 14.4A
Arduino battery charge control and UPS failover
smd chips will get heatsinks aswel