when upgrading to a 200 amp service panel with service drop coming from bottom underground do I need southern California Edison to come disconnect and then reconnect or can I just do it on my own. I do have a permit.
You'll need utility help for this one
Since you're dealing with an "all in one" device that combines a meter base, service disconnect, and loadcenter, you'll need to have the utility cut power for you to be able to safely replace it. Fortunately, this shouldn't be an issue for them provided you have them do it during normal business hours.
Recommendation: don't go with another all-in-one
While all-in-one/combination service entrance devices are inexpensive and labor-saving for production builders, they have the great problem that you see here: you need to have the utility cut power just so you can expand this. A separate meter-main and panel gives you more flexibility in this regard, and also expands your ability to pick panels (I haven't yet seen a CSED upwards of 42 spaces, whereas many loadcenter lines go up to 54 or 60 spaces these days).
If there is a main switch or fuse right under your meter you can operate those, if your connection lacks that features or those are 'locked' so only the utility can operate on them, you'll have to call SCE and ask them.
Edit: also check if your contract can hold 200A on 'meter side' if it doesn't and you load your panel for 200A SCE fuses will blow and you'll have to call for service restore, so ask SCE to check if your service is capable for 200A
EDIT2: I post my meter and panel as example: You can see on my meter the bundled main disconnect, see if there is one on your too. On my panel you can see the main GFCI breaker (right) and the circuits' breakers, so I can remove power both from my main switch and from the meter itself. Here on older installations, now replaced, where main disconnect were fuses.