Sounds like things are moving on nicely. San i would also activly advise that why trying to get to work with 4.8 you also start on 4.9 with a preview build. 4.9 has some very nice stuff like being able to set tick intervals, and area lights. Last time i played with our test build AHR i found you can use baked lighting and AHR at the same time, Baking sky illumination with no sun, and world lights like interior lights etc worked well, But still allowed me to use a movable dynamic sun light. May well be slower but being able to achieve the photorealism of baked lighting mixed with dynamic sun for archviz will be fun to play with.
Keep up the great work.