Polearm: Bamboo Spear, Light Lance (pure hoplite) or Red Tassel Spear (shielder with one handed weapon)
One Handed Weapon (optional): There are lots of good choices. Get a weapon with either pierce, blunt or very high cut damage
Shield: Heavy Round Shield, all other shields with difficulty 4 or 5 are also good for hoplites (besides the Steel Buckler)
Head Armor: Something between 1 and 2 weight
Body Armor: Mail Shirt with Fur and Byrnie offer a good protection for low upkeep/weight. Anything up to 40 body armor will also do the job
Hand Armor: Mail Mittens
Leg Armor: Mail Chausses are a very good choice, but you could also use some cheaper boots since hits in the legs are quite rare
21/15 and 18/18 are good builds if you plan to retire at level 31 (which you should do).
Put all weapon points into polearms if you want a pure hoplite. If you prefer to be a shielder with a Spear as side arm you should only put between 70 and 100 points into polearms and the rest into one handed weapons.