身高164CM尺寸卻不知該如何挑

以下是輸入尺寸查詢的結果

Measurements
-------------------------------------------
Inseam: 74
Trunk: 62
Forearm: 29
Arm: 50
Thigh: 53
Lower Leg: 50
Sternal Notch: 141
Total Body Height: 164


The Competitive Fit (cm)
-------------------------------------------
Seat tube range c-c: 47.9 - 48.4
Seat tube range c-t: 49.4 - 49.9
Top tube length: 49.8 - 50.2
Stem Length: 9.2 - 9.8
BB-Saddle Position: 68.0 - 70.0
Saddle-Handlebar: 44.7 - 45.3
Saddle Setback: 1.4 - 1.8
Seatpost Type: NON-SETBACK


The Eddy Fit (cm)
-------------------------------------------
Seat tube range c-c: 49.1 - 49.6
Seat tube range c-t: 50.6 - 51.1
Top tube length: 49.8 - 50.2
Stem Length: 8.1 - 8.7
BB-Saddle Position: 67.2 - 69.2
Saddle-Handlebar: 45.5 - 46.1
Saddle Setback: 2.6 - 3.0
Seatpost Type: NON-SETBACK


The French Fit (cm)
-------------------------------------------
Seat tube range c-c: 50.8 - 51.3
Seat tube range c-t: 52.3 - 52.8
Top tube length: 51.0 - 51.4
Stem Length: 8.3 - 8.9
BB-Saddle Position: 65.5 - 67.5
Saddle-Handlebar: 47.2 - 47.8
Saddle Setback: 2.1 - 2.5
Seatpost Type: SETBACK

從未接觸過公路車.做了功課.....卻還是一頭霧水(各家廠牌尺寸都不太一樣)
如果預算40張小朋友.有何好建議..............車種?尺寸?