It is now possible to order PlanetScope data as surface reflectance (asset type analytic_sr). You might also find the option to use UDM2 bands (usable data mask) handy.
More info here:
Note that to avoid mixed data, analytic and analytic_sr orders cannot use the same BYOC collection. Likewise, orders with and without UDM2 bands also cannot be mixed in the same BYOC collection.