Trainz 2019 DLC: JR Rolling Stock Pack ( TRS19 ) Download Free

If one is designing a route in TRS2019, is it wise to stay away from using assets marked 'Installed, Payware' in Content Manager? Here are the assets I'm using that are so marked. I don't know what to do....
VR Stockyard Cattle Fence
TFX - Grass Long 20 - Seasonal
Barn Old 1 - Seasonal
2 Track Bridge Plate Girder
Car 15 JP -Nissan Primera Scenery
A25 Forklift Truck
Animal - Eagle
JR Wood Fence (Style 1)
Animal - Chicken
VR Stockyard Cattle Gate
Carz_Group_Square_03 seasonal
Animal - Cow
BD-Factory 3
Animal - Dog
Smoke Tower 1 - Seasonal
Plant 2 - Flower Plant 2 - Seasonal
Animal - Horse
Logs - Stack 4.2m long
BD-Factory Agro 07
Bush American Boxwood 1 - Seasonal
Tree Broadleaf 06 Darker
Rock 4 - Seasonal
Bush American Boxwood 1 - Seasonal (Dif LOD Settings)
Bush Azalea 1 - Seasonal
Bush Broom Snake Weed 1 - Seasonal
Rock Formation 1 G Chunk A - Seasonal
PBR Grass 8 - Seasonal
Bush Carolina Buckthorn 2 (Dead) - Seasonal
Lumber Mill Tower
Cartellone Staz Lungo OLD
Carz_Group_Square_02 seasonal
Cow1
Downtown Bench
Fence-5
Truck Broken Down 1 - Seasonal
FFR Grass 06
Sig_US1_04
FFR Moss & Gravel 01
Plant 4 - Monstera - Seasonal
FFR Rock Cliff 01 (Brown)
Weir effect
IS Locali servizio
Rock 5 - Seasonal
Linemans Tool House
PBR Grass 9 - Seasonal
Livestock - Aberdeen Angus Cow
Plant 4 - Alocasia Exotic - Seasonal
PBR Dirt 5 - No Seasonal
Livestock - Friesian Cow
PG Factory building 17 25860
Plant 4 - Palm Dracaena - Seasonal
Plant 4 - Tropical Plant B - Seasonal
Tree Broadleaf 03 Darker
Plant Azalea 02
Rock Formation 1 D Chunk A - Seasonal
Rock Formation 1 E Chunk A - Seasonal
TFX - Grass 4 - Seasonal
Tunnel Road