[Lottery Larry]

"The tournaments I host are usually 10$ buy-in, sometimes up to 20$ depending on how many people come, but mostly it is for entertainment. I'm keeping in mind how much money we regularly play for when coming up with the cash game amounts.

So far this is what I have thought would work best:

Game: NL Hold'em
Blinds: 25cents/50cents
Antes: None
Minimum Buyin: $10
Maximum Buyin: $50
Chip Denominations: 25cents/$1/$5"

Blinds and chips are fine for the $50 cap (I've never heard of antes for a cash holdem game), but I think your group is going to find this pretty expensive compared to tourney nights.

You might want to go $0.10/$0.20 with a $5 min, $20 cap. That way, 2-3 buyins isn't 3 figures.

"1)Are the Chip Denominations good for this game, or should I add some like 50cents or $2?"

No- stick with 3 chips at most.

"Should I allow cash to be used on the table, or will it be pointless and just confuse things since the buy-in is so small. It would be kind of funny to see someone slap 2 fives together and throw them on the table like Negreanu does with 50k bricks."

No, it wouldn't be funny at all- no thump.

Cash can play, but should be turned into chips when feasible. Do not allow cash to be taken off of the table, and use the table stakes rule of requiring money to be on the table BEFORE you are dealt your hand.

I typically use the "Jim is going $20 behind" to indicate the amount he is bringing in, if the cards are being dealt. That way there is no doubt and you don't have to miss a hand. That $20 better be on the table before the flop.

"Should I allow people to add money to their stack whenever they want, everyone can add at a designated time like once every hour, or only when they bust out? I'm new to hosting cash games so I'm not sure what the best rules on this are."

Always whenever, subject to the table stakes rule procedures above. This isn't a tourney. Whether you want to institute a loss cap to protect your players as they get use to this ("3 buyins and you're done") is up to you

"Is it good to let people come and go whenever they want (most likely resulting in some people cashing out when they have made a huge profit), or set a time when we all stop playing?"

That really depends on your group and how many people are playing (and who will play short-handed). Normally you cash whenever you'd like. If the game would break down too easily, you might institute a half-hour or hour warning before a player departs.

Tell all of your players to bring change for a $20, to cash out with. Make sure you as the host has a few dollars in whatever change you need to match the blinds, for cashing out