Just to reinforce what
@wasmewasntit is saying.
If you set this up and put all them fish in it straight away you WILL kill them. Any that manage to survive will be seriously damaged.
If you are going for a planted tank get your plants set up and growing first. Then cycle your tank and only then should you be thinking about adding fish.
Edit: Also in my experience them neons will probably shred the guppy as they tend to not be able to resist nipping long fins.
Edit 2: As
@wasmewasntit says below. We don't want to put you off and its great that you are excited for this. However anyone that has been in the hobby awhile has seen this story a hundred times.
People get excited and/or impatient and try and rush to get the fish in as fast as possible. then a week or so later their fish start getting ill, acting odd and dying. Then they are stuck with weeks of sick/dying fish while they try and fix all the problems in their tank.
At best you are going to kill a bunch of fish, cause yourself a lot of upset and stress and then be right back at the start again having to do it the right way. At worst you will be doing all of that but then be so upset/fed up with it that you will just stop and not bother again.
Even in my everyday life I have had the same conversation with a lot of people. They wanted to keep fish, they got a tank, didn't know about cycling and just ended up with a bunch of dead fish and then gave up.
Look through the welcome threads on here. The majority of people posting in there have come to this forum because they have just set up a new tank, stuck fish in and are now having issues.
Same goes for the Fish emergencies section. 90% of the issues people have are due to not having properly cycled their tanks.