Need some recommendations for next tank build

[Lopowopool]

As of right now I have a 10 gallon nano reef tank, which thanks to members on here, is running in great condition, water quality is perfect, and my corals/fish are healthy as can be. Well long story short, I have fallen in love with a tank I saw at my local fish store. It's the innovative marine nuvo drop off 20 gallon tank. They retail for 350.00, however they have one for sale at the store for 200.00. I'll post a picture of the tank, its stunning in person. Anyways, I will be moving my nano 10 old point of sale hand me down 10yo tank into the new 20. Obviously I'll cycle it and such before hand, can't be killing everything Ive worked so hard for. I'm wondering what protein skimmer I should get, I currently have one that mounts inside with suction. If I'm dropping 200 for a 20 gallon, I don't want to see the skimmer. Is there a good skimmer that doesn't go in or hang all ugly on the tank? For the air flow pump I'm thinking of moving from my Hydor Koralia 240 to a Hydor Koralia Evolution Pump 600(recommended for 25-40). The heater I'm planning on getting an aqueon pro, has good ratings online. Any recommendations for what else or something better than what I'm planning on getting? Tank is not a question, I'm stuck on it lol.

Here is the description for the tank:

• DIMS: Length 20” Width: 15” Height: 17”
• 20 Gallons
• 8mm Cell Cast Acrylic
• 2-Tier Scaping Zones
• Built-in Dual Overflows
• Dual Flare Nozzles
• Designated Baffle Columns that accommodate (1) Desktop Ghost Skimmer & (1) Desktop MiniMax Media Reactor
• Pre-Installed Rubber Leveling Mat
• (2) - Removable 200 micron filter sock
• (1) - 11W 110v/60Hz 211 GPH Return Pumps
• Pearl White Pedestal Included
• Includes: Flexible hose and return elbow with (2) Directional Flow Nozzles

Not sure what the filter set up is, if it comes with a built in one, or if I need one, sorry I'm still learning terms and such. Basically, if I get this tank, what does it need me to buy, and what's the best(doesn't mean most expensive ) I can get lol.

I'm sure you experienced people are hitting your heads right about now, calling me a noob, but yeah, I am one soooo... Appreciate dumbing down everything for me lol