Mostly-Objective Ship-by-Ship Analysis

Thanks for the truth, as always! I enjoy fleet farming and battles, am having zero success in events and challenges for capitol ship shards - only Executrix and 3 each DS and ls ships at 5 stars, all now requiring that. Not willing to gamble $ for whatever the data cards have. Not enough resources at f2p to invest in characters and ships at same time. Farming tie advanced, Scimitar, is ghost a waste due to slow speed? Should I focus on Wiggs pair to farm? I cannot get tie raider or Kyle shuttle, Cassian u wing and MF too far off, even Bistan u wing straining resources to build up.
Ally code 491-538-127. Thank you