Making Sex Completely Optional
In my opinion, this game is the one that have the most balance in sex and plot content. Other games sometime have amazing plot but sex seems out of place and felt like porn. Some game have awesome and various sex content but the plot is hardly enjoyable.
Harem Hotel on the other hand, kinda balances that and the sex content seems to provide more depth to the character instead of just being a porn content. Example to this are Maria and Felicity. They discover their own self by experiencing their own sexuality. My point is, sex in this game bring the player and the characters more closer to each other. Most of em get to know player more after sex. When you have the character development and sex content in balance, the game felt more lifelike.
So, if you take out the NSFW content, it might cause a gap in characters development and plot. SFW version should have an indicator that implied the player have sex with characters, if chosen to continue the relationship but simply skipping the H content ahead. Also, I'm reminding you here, your characters stats are based on sexual traits. So, making this game SFW might take most of your content out of the game. The plot for SFW version also have to make sense without NSFW content.
I'm not exactly opposing you making SFW version here, don't get me wrong. I'm just saying there's a lot of things to consider here than simply removing the NSFW content to make SFW version. Another thing to add is if it's time consuming for you to to convert this to SFW version. I'd rather you making progress on the game just like you already planned.
But in the end, this is still up to you. I've like everything you've done so far and other things you have planned in the diary, so don't let my opinion stops you from making decision that you think is the best for the game. I will always be rooting for you, Runey. Wishing you all the best.