Live in CA & grew up going to DLR so it’s where my heart is
WDW has a lot to do but it’s SO inconvenient!
To find the better deal you will have to price out each trip. Tickets, hotels, airfare, transportation. Save yourself a rental car in DLR by getting a hotel where the parks are walkable but remember your rideshare cost from SNA, LGB or LAX. Search each hotel you’re considering on the DLR Forum and you’ll probably find info on them. If you don’t see anything recent for specific hotels just ask.
ETA: There is also something to be said for your favorite rides being running at DL but keep in mind this March at DL Fantasmic is down, WOC *might* be back open (“late 2018” return has passed) & the Castle will be under scrims. More returns could be added to that list anywhere from now to a week prior to your arrival. F&W CA Adventure will be running (1/3 size of EP F&W but FYI I find the prices higher), no menus or activity info has been released yet.
OH- and
Disneyland has MaxPass ($10/day/person) which is awesome & I encourage you to budget for at least 2 days of that. Pull any FP you want from your phone every 90 mins!